My trusty 5yr old FS-55's older style foam grip is getting trashed by my TrimmerTrap's clamp... So I'm thinking about getting a new FS-80 or a new Redmax. But I'm having a hard time figuring out which one to consider, the Redmax website sorta sux. (short on info) Which Redmax is around $300 and worth buying? What advantages does it have over the FS-80?